He confessed to 13 offences and was described as a committed and determined paedophile.

His two accomplices, Woman A and Woman B, were jailed for 14 years and 16 years respectively.

After sexually touching a groupie's 11-month-old baby, Watkins tried to have penetrative sex with the child. He also encouraged a second fan to abuse her child during a webcam chat and secretly stashed child porn videos, some of which he had made himself.

Trial judge Mr Justice Royce told Watkins: "Those who have appeared in these courts over many years see a large number of horrific cases. This case, however, breaks new ground.

"I am satisfied that you are a deeply corrupting influence, you are highly manipulative, you are a sexual predator, you are dangerous. The public and, in particular, young females need protection from you."

Watkins was told that he will have to serve two-thirds of the custodial term before he can be considered for release by the Parole Board.